Ionization and dissociation of linear triatomic molecules in strong laser fields

摘要: Abstract Ionization of molecules in strong femtosecond laser fields is a key process for understanding variety strong-field molecular physical phenomena. In this study, we performed an experimental study on ionization and dissociation three linear triatomic molecules, CO 2 , CS OCS, using time-of-flight mass spectrometer. We measured the yield different parent ions various fragment as function intensity range 2.0 × 10 13  W/cm to 8.0 × 10 14 both 800-nm 400-nm fields. The mechanism single double ionization, well fragmentation, was discussed based results. addition, angular distributions were obtained. results show anisotropic formation highly charged atomic ions, which may be attributed alignment before dissociation.